Effects of Ultrasonic Treatment on Microstructure and Mechanical Properties of Semisolid Sn-52Bi Alloy
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2016年第5期
论文作者：胡永俊 郑辉庭
文章页码：1063 - 1067
摘 要：The effects of ultrasonic vibration temperature on the microstructure of semisolid Sn-52 Bi alloy and mechanical properties were investigated. The results show that the microstructure and mechanical properties are improved obviously after the ultrasonic treatment. Nearly round and uniformly distributed primary Sn phase particles were obtained under the cavitation and acoustic streaming caused by ultrasonic treatment. The best effects of ultrasonic treatment on microstructure and mechanical properties were obtained with the ultrasonic vibration for 120 s at 140 ℃. The elongation of semisolid Sn-52 Bi alloy treated by ultrasonic vibration for 120 s at 140 ℃ was 42% and increased by 156.09% compared to conventional liquid casting Sn-52 Bi alloy without ultrasonic vibration. It is a feasible and effective method to adopt the semisolid metal forming technology assisted with ultrasonic vibration to improve the ductility of Sn-Bi alloys.
胡永俊，郑辉庭
School of Material and Energy, Guangdong University of Technology
摘 要：The effects of ultrasonic vibration temperature on the microstructure of semisolid Sn-52 Bi alloy and mechanical properties were investigated. The results show that the microstructure and mechanical properties are improved obviously after the ultrasonic treatment. Nearly round and uniformly distributed primary Sn phase particles were obtained under the cavitation and acoustic streaming caused by ultrasonic treatment. The best effects of ultrasonic treatment on microstructure and mechanical properties were obtained with the ultrasonic vibration for 120 s at 140 ℃. The elongation of semisolid Sn-52 Bi alloy treated by ultrasonic vibration for 120 s at 140 ℃ was 42% and increased by 156.09% compared to conventional liquid casting Sn-52 Bi alloy without ultrasonic vibration. It is a feasible and effective method to adopt the semisolid metal forming technology assisted with ultrasonic vibration to improve the ductility of Sn-Bi alloys.
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